[linux-2.6-block.git] / drivers / bluetooth / btbcm.c

/*
 *
 *  Bluetooth support for Broadcom devices
 *
 *  Copyright (C) 2015  Intel Corporation
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/module.h>
#include <linux/firmware.h>
#include <asm/unaligned.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btbcm.h"

#define VERSION "0.1"

#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})

int btbcm_check_bdaddr(struct hci_dev *hdev)
{
	struct hci_rp_read_bd_addr *bda;
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
			     HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		int err = PTR_ERR(skb);
		bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
		return err;
	}

	if (skb->len != sizeof(*bda)) {
		bt_dev_err(hdev, "BCM: Device address length mismatch");
		kfree_skb(skb);
		return -EIO;
	}

	bda = (struct hci_rp_read_bd_addr *)skb->data;

	/* Check if the address indicates a controller with either an
	 * invalid or default address. In both cases the device needs
	 * to be marked as not having a valid address.
	 *
	 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
	 * with no configured address.
	 *
	 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
	 * with no configured address.
	 *
	 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
	 * with waiting for configuration state.
	 *
	 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
	 * with waiting for configuration state.
	 *
	 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
	 * with no configured address.
	 */
	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM43430A0)) {
		bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
			    &bda->bdaddr);
		set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	}

	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);

int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
	struct sk_buff *skb;
	int err;

	skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
		return err;
	}
	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);

int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
{
	const struct hci_command_hdr *cmd;
	const u8 *fw_ptr;
	size_t fw_size;
	struct sk_buff *skb;
	u16 opcode;
	int err = 0;

	/* Start Download */
	skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
			   err);
		goto done;
	}
	kfree_skb(skb);

	/* 50 msec delay after Download Minidrv completes */
	msleep(50);

	fw_ptr = fw->data;
	fw_size = fw->size;

	while (fw_size >= sizeof(*cmd)) {
		const u8 *cmd_param;

		cmd = (struct hci_command_hdr *)fw_ptr;
		fw_ptr += sizeof(*cmd);
		fw_size -= sizeof(*cmd);

		if (fw_size < cmd->plen) {
			bt_dev_err(hdev, "BCM: Patch is corrupted");
			err = -EINVAL;
			goto done;
		}

		cmd_param = fw_ptr;
		fw_ptr += cmd->plen;
		fw_size -= cmd->plen;

		opcode = le16_to_cpu(cmd->opcode);

		skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
				     HCI_INIT_TIMEOUT);
		if (IS_ERR(skb)) {
			err = PTR_ERR(skb);
			bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
				   opcode, err);
			goto done;
		}
		kfree_skb(skb);
	}

	/* 250 msec delay after Launch Ram completes */
	msleep(250);

done:
	return err;
}
EXPORT_SYMBOL(btbcm_patchram);

static int btbcm_reset(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		int err = PTR_ERR(skb);
		bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
		return err;
	}
	kfree_skb(skb);

	/* 100 msec delay for module to complete reset process */
	msleep(100);

	return 0;
}

static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
			     HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

	if (skb->len != sizeof(struct hci_rp_read_local_name)) {
		bt_dev_err(hdev, "BCM: Local name length mismatch");
		kfree_skb(skb);
		return ERR_PTR(-EIO);
	}

	return skb;
}

static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
			     HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
		bt_dev_err(hdev, "BCM: Local version length mismatch");
		kfree_skb(skb);
		return ERR_PTR(-EIO);
	}

	return skb;
}

static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

	if (skb->len != 7) {
		bt_dev_err(hdev, "BCM: Verbose config length mismatch");
		kfree_skb(skb);
		return ERR_PTR(-EIO);
	}

	return skb;
}

static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

	if (skb->len != 9) {
		bt_dev_err(hdev, "BCM: Controller features length mismatch");
		kfree_skb(skb);
		return ERR_PTR(-EIO);
	}

	return skb;
}

static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

	if (skb->len != 5) {
		bt_dev_err(hdev, "BCM: USB product length mismatch");
		kfree_skb(skb);
		return ERR_PTR(-EIO);
	}

	return skb;
}

static int btbcm_read_info(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	/* Read Verbose Config Version Info */
	skb = btbcm_read_verbose_config(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
	kfree_skb(skb);

	/* Read Controller Features */
	skb = btbcm_read_controller_features(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
	kfree_skb(skb);

	/* Read Local Name */
	skb = btbcm_read_local_name(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
	kfree_skb(skb);

	return 0;
}

struct bcm_subver_table {
	u16 subver;
	const char *name;
};

static const struct bcm_subver_table bcm_uart_subver_table[] = {
	{ 0x4103, "BCM4330B1"	},	/* 002.001.003 */
	{ 0x410e, "BCM43341B0"	},	/* 002.001.014 */
	{ 0x4406, "BCM4324B3"	},	/* 002.004.006 */
	{ 0x6109, "BCM4335C0"	},	/* 003.001.009 */
	{ 0x610c, "BCM4354"	},	/* 003.001.012 */
	{ 0x2122, "BCM4343A0"	},	/* 001.001.034 */
	{ 0x2209, "BCM43430A1"  },	/* 001.002.009 */
	{ 0x6119, "BCM4345C0"	},	/* 003.001.025 */
	{ 0x230f, "BCM4356A2"	},	/* 001.003.015 */
	{ 0x220e, "BCM20702A1"  },	/* 001.002.014 */
	{ 0x4217, "BCM4329B1"   },	/* 002.002.023 */
	{ }
};

static const struct bcm_subver_table bcm_usb_subver_table[] = {
	{ 0x210b, "BCM43142A0"	},	/* 001.001.011 */
	{ 0x2112, "BCM4314A0"	},	/* 001.001.018 */
	{ 0x2118, "BCM20702A0"	},	/* 001.001.024 */
	{ 0x2126, "BCM4335A0"	},	/* 001.001.038 */
	{ 0x220e, "BCM20702A1"	},	/* 001.002.014 */
	{ 0x230f, "BCM4354A2"	},	/* 001.003.015 */
	{ 0x4106, "BCM4335B0"	},	/* 002.001.006 */
	{ 0x410e, "BCM20702B0"	},	/* 002.001.014 */
	{ 0x6109, "BCM4335C0"	},	/* 003.001.009 */
	{ 0x610c, "BCM4354"	},	/* 003.001.012 */
	{ }
};

int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len,
		     bool reinit)
{
	u16 subver, rev, pid, vid;
	const char *hw_name = "BCM";
	struct sk_buff *skb;
	struct hci_rp_read_local_version *ver;
	const struct bcm_subver_table *bcm_subver_table;
	int i, err;

	/* Reset */
	err = btbcm_reset(hdev);
	if (err)
		return err;

	/* Read Local Version Info */
	skb = btbcm_read_local_version(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	ver = (struct hci_rp_read_local_version *)skb->data;
	rev = le16_to_cpu(ver->hci_rev);
	subver = le16_to_cpu(ver->lmp_subver);
	kfree_skb(skb);

	/* Read controller information */
	if (!reinit) {
		err = btbcm_read_info(hdev);
		if (err)
			return err;
	}

	/* Upper nibble of rev should be between 0 and 3? */
	if (((rev & 0xf000) >> 12) > 3)
		return 0;

	bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
						    bcm_uart_subver_table;

	for (i = 0; bcm_subver_table[i].name; i++) {
		if (subver == bcm_subver_table[i].subver) {
			hw_name = bcm_subver_table[i].name;
			break;
		}
	}

	if (hdev->bus == HCI_USB) {
		/* Read USB Product Info */
		skb = btbcm_read_usb_product(hdev);
		if (IS_ERR(skb))
			return PTR_ERR(skb);

		vid = get_unaligned_le16(skb->data + 1);
		pid = get_unaligned_le16(skb->data + 3);
		kfree_skb(skb);

		snprintf(fw_name, len, "brcm/%s-%4.4x-%4.4x.hcd",
			 hw_name, vid, pid);
	} else {
		snprintf(fw_name, len, "brcm/%s.hcd", hw_name);
	}

	bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
		    hw_name, (subver & 0xe000) >> 13,
		    (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_initialize);

int btbcm_finalize(struct hci_dev *hdev)
{
	char fw_name[64];
	int err;

	/* Re-initialize */
	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
	if (err)
		return err;

	btbcm_check_bdaddr(hdev);

	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_finalize);

int btbcm_setup_patchram(struct hci_dev *hdev)
{
	char fw_name[64];
	const struct firmware *fw;
	struct sk_buff *skb;
	int err;

	/* Initialize */
	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), false);
	if (err)
		return err;

	err = request_firmware(&fw, fw_name, &hdev->dev);
	if (err < 0) {
		bt_dev_info(hdev, "BCM: Patch %s not found", fw_name);
		goto done;
	}

	btbcm_patchram(hdev, fw);

	release_firmware(fw);

	/* Re-initialize */
	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
	if (err)
		return err;

	/* Read Local Name */
	skb = btbcm_read_local_name(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
	kfree_skb(skb);

done:
	btbcm_check_bdaddr(hdev);

	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_setup_patchram);

int btbcm_setup_apple(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	int err;

	/* Reset */
	err = btbcm_reset(hdev);
	if (err)
		return err;

	/* Read Verbose Config Version Info */
	skb = btbcm_read_verbose_config(hdev);
	if (!IS_ERR(skb)) {
		bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
			    skb->data[1], get_unaligned_le16(skb->data + 5));
		kfree_skb(skb);
	}

	/* Read USB Product Info */
	skb = btbcm_read_usb_product(hdev);
	if (!IS_ERR(skb)) {
		bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
			    get_unaligned_le16(skb->data + 1),
			    get_unaligned_le16(skb->data + 3));
		kfree_skb(skb);
	}

	/* Read Controller Features */
	skb = btbcm_read_controller_features(hdev);
	if (!IS_ERR(skb)) {
		bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
		kfree_skb(skb);
	}

	/* Read Local Name */
	skb = btbcm_read_local_name(hdev);
	if (!IS_ERR(skb)) {
		bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
		kfree_skb(skb);
	}

	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_setup_apple);

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
Commit	Line	Data
	1	/*
	2	*
	3	* Bluetooth support for Broadcom devices
	4	*
	5	* Copyright (C) 2015 Intel Corporation
	6	*
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	*/
	23
	24	#include <linux/module.h>
	25	#include <linux/firmware.h>
	26	#include <asm/unaligned.h>
	27
	28	#include <net/bluetooth/bluetooth.h>
	29	#include <net/bluetooth/hci_core.h>
	30
	31	#include "btbcm.h"
	32
	33	#define VERSION "0.1"
	34
	35	#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
	36	#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
	37	#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
	38	#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
	39	#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
	40
	41	int btbcm_check_bdaddr(struct hci_dev *hdev)
	42	{
	43	struct hci_rp_read_bd_addr *bda;
	44	struct sk_buff *skb;
	45
	46	skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
	47	HCI_INIT_TIMEOUT);
	48	if (IS_ERR(skb)) {
	49	int err = PTR_ERR(skb);
	50	bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
	51	return err;
	52	}
	53
	54	if (skb->len != sizeof(*bda)) {
	55	bt_dev_err(hdev, "BCM: Device address length mismatch");
	56	kfree_skb(skb);
	57	return -EIO;
	58	}
	59
	60	bda = (struct hci_rp_read_bd_addr *)skb->data;
	61
	62	/* Check if the address indicates a controller with either an
	63	* invalid or default address. In both cases the device needs
	64	* to be marked as not having a valid address.
	65	*
	66	* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
	67	* with no configured address.
	68	*
	69	* The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
	70	* with no configured address.
	71	*
	72	* The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
	73	* with waiting for configuration state.
	74	*
	75	* The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
	76	* with waiting for configuration state.
	77	*
	78	* The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
	79	* with no configured address.
	80	*/
	81	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) \|\|
	82	!bacmp(&bda->bdaddr, BDADDR_BCM20702A1) \|\|
	83	!bacmp(&bda->bdaddr, BDADDR_BCM4324B3) \|\|
	84	!bacmp(&bda->bdaddr, BDADDR_BCM4330B1) \|\|
	85	!bacmp(&bda->bdaddr, BDADDR_BCM43430A0)) {
	86	bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
	87	&bda->bdaddr);
	88	set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	89	}
	90
	91	kfree_skb(skb);
	92
	93	return 0;
	94	}
	95	EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
	96
	97	int btbcm_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	98	{
	99	struct sk_buff *skb;
	100	int err;
	101
	102	skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
	103	if (IS_ERR(skb)) {
	104	err = PTR_ERR(skb);
	105	bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
	106	return err;
	107	}
	108	kfree_skb(skb);
	109
	110	return 0;
	111	}
	112	EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
	113
	114	int btbcm_patchram(struct hci_dev hdev, const struct firmware fw)
	115	{
	116	const struct hci_command_hdr *cmd;
	117	const u8 *fw_ptr;
	118	size_t fw_size;
	119	struct sk_buff *skb;
	120	u16 opcode;
	121	int err = 0;
	122
	123	/* Start Download */
	124	skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
	125	if (IS_ERR(skb)) {
	126	err = PTR_ERR(skb);
	127	bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
	128	err);
	129	goto done;
	130	}
	131	kfree_skb(skb);
	132
	133	/* 50 msec delay after Download Minidrv completes */
	134	msleep(50);
	135
	136	fw_ptr = fw->data;
	137	fw_size = fw->size;
	138
	139	while (fw_size >= sizeof(*cmd)) {
	140	const u8 *cmd_param;
	141
	142	cmd = (struct hci_command_hdr *)fw_ptr;
	143	fw_ptr += sizeof(*cmd);
	144	fw_size -= sizeof(*cmd);
	145
	146	if (fw_size < cmd->plen) {
	147	bt_dev_err(hdev, "BCM: Patch is corrupted");
	148	err = -EINVAL;
	149	goto done;
	150	}
	151
	152	cmd_param = fw_ptr;
	153	fw_ptr += cmd->plen;
	154	fw_size -= cmd->plen;
	155
	156	opcode = le16_to_cpu(cmd->opcode);
	157
	158	skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
	159	HCI_INIT_TIMEOUT);
	160	if (IS_ERR(skb)) {
	161	err = PTR_ERR(skb);
	162	bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
	163	opcode, err);
	164	goto done;
	165	}
	166	kfree_skb(skb);
	167	}
	168
	169	/* 250 msec delay after Launch Ram completes */
	170	msleep(250);
	171
	172	done:
	173	return err;
	174	}
	175	EXPORT_SYMBOL(btbcm_patchram);
	176
	177	static int btbcm_reset(struct hci_dev *hdev)
	178	{
	179	struct sk_buff *skb;
	180
	181	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	182	if (IS_ERR(skb)) {
	183	int err = PTR_ERR(skb);
	184	bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
	185	return err;
	186	}
	187	kfree_skb(skb);
	188
	189	/* 100 msec delay for module to complete reset process */
	190	msleep(100);
	191
	192	return 0;
	193	}
	194
	195	static struct sk_buff btbcm_read_local_name(struct hci_dev hdev)
	196	{
	197	struct sk_buff *skb;
	198
	199	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
	200	HCI_INIT_TIMEOUT);
	201	if (IS_ERR(skb)) {
	202	bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
	203	PTR_ERR(skb));
	204	return skb;
	205	}
	206
	207	if (skb->len != sizeof(struct hci_rp_read_local_name)) {
	208	bt_dev_err(hdev, "BCM: Local name length mismatch");
	209	kfree_skb(skb);
	210	return ERR_PTR(-EIO);
	211	}
	212
	213	return skb;
	214	}
	215
	216	static struct sk_buff btbcm_read_local_version(struct hci_dev hdev)
	217	{
	218	struct sk_buff *skb;
	219
	220	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
	221	HCI_INIT_TIMEOUT);
	222	if (IS_ERR(skb)) {
	223	bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
	224	PTR_ERR(skb));
	225	return skb;
	226	}
	227
	228	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
	229	bt_dev_err(hdev, "BCM: Local version length mismatch");
	230	kfree_skb(skb);
	231	return ERR_PTR(-EIO);
	232	}
	233
	234	return skb;
	235	}
	236
	237	static struct sk_buff btbcm_read_verbose_config(struct hci_dev hdev)
	238	{
	239	struct sk_buff *skb;
	240
	241	skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
	242	if (IS_ERR(skb)) {
	243	bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
	244	PTR_ERR(skb));
	245	return skb;
	246	}
	247
	248	if (skb->len != 7) {
	249	bt_dev_err(hdev, "BCM: Verbose config length mismatch");
	250	kfree_skb(skb);
	251	return ERR_PTR(-EIO);
	252	}
	253
	254	return skb;
	255	}
	256
	257	static struct sk_buff btbcm_read_controller_features(struct hci_dev hdev)
	258	{
	259	struct sk_buff *skb;
	260
	261	skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
	262	if (IS_ERR(skb)) {
	263	bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
	264	PTR_ERR(skb));
	265	return skb;
	266	}
	267
	268	if (skb->len != 9) {
	269	bt_dev_err(hdev, "BCM: Controller features length mismatch");
	270	kfree_skb(skb);
	271	return ERR_PTR(-EIO);
	272	}
	273
	274	return skb;
	275	}
	276
	277	static struct sk_buff btbcm_read_usb_product(struct hci_dev hdev)
	278	{
	279	struct sk_buff *skb;
	280
	281	skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
	282	if (IS_ERR(skb)) {
	283	bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
	284	PTR_ERR(skb));
	285	return skb;
	286	}
	287
	288	if (skb->len != 5) {
	289	bt_dev_err(hdev, "BCM: USB product length mismatch");
	290	kfree_skb(skb);
	291	return ERR_PTR(-EIO);
	292	}
	293
	294	return skb;
	295	}
	296
	297	static int btbcm_read_info(struct hci_dev *hdev)
	298	{
	299	struct sk_buff *skb;
	300
	301	/* Read Verbose Config Version Info */
	302	skb = btbcm_read_verbose_config(hdev);
	303	if (IS_ERR(skb))
	304	return PTR_ERR(skb);
	305
	306	bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
	307	kfree_skb(skb);
	308
	309	/* Read Controller Features */
	310	skb = btbcm_read_controller_features(hdev);
	311	if (IS_ERR(skb))
	312	return PTR_ERR(skb);
	313
	314	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
	315	kfree_skb(skb);
	316
	317	/* Read Local Name */
	318	skb = btbcm_read_local_name(hdev);
	319	if (IS_ERR(skb))
	320	return PTR_ERR(skb);
	321
	322	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
	323	kfree_skb(skb);
	324
	325	return 0;
	326	}
	327
	328	struct bcm_subver_table {
	329	u16 subver;
	330	const char *name;
	331	};
	332
	333	static const struct bcm_subver_table bcm_uart_subver_table[] = {
	334	{ 0x4103, "BCM4330B1" }, /* 002.001.003 */
	335	{ 0x410e, "BCM43341B0" }, /* 002.001.014 */
	336	{ 0x4406, "BCM4324B3" }, /* 002.004.006 */
	337	{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
	338	{ 0x610c, "BCM4354" }, /* 003.001.012 */
	339	{ 0x2122, "BCM4343A0" }, /* 001.001.034 */
	340	{ 0x2209, "BCM43430A1" }, /* 001.002.009 */
	341	{ 0x6119, "BCM4345C0" }, /* 003.001.025 */
	342	{ 0x230f, "BCM4356A2" }, /* 001.003.015 */
	343	{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
	344	{ 0x4217, "BCM4329B1" }, /* 002.002.023 */
	345	{ }
	346	};
	347
	348	static const struct bcm_subver_table bcm_usb_subver_table[] = {
	349	{ 0x210b, "BCM43142A0" }, /* 001.001.011 */
	350	{ 0x2112, "BCM4314A0" }, /* 001.001.018 */
	351	{ 0x2118, "BCM20702A0" }, /* 001.001.024 */
	352	{ 0x2126, "BCM4335A0" }, /* 001.001.038 */
	353	{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
	354	{ 0x230f, "BCM4354A2" }, /* 001.003.015 */
	355	{ 0x4106, "BCM4335B0" }, /* 002.001.006 */
	356	{ 0x410e, "BCM20702B0" }, /* 002.001.014 */
	357	{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
	358	{ 0x610c, "BCM4354" }, /* 003.001.012 */
	359	{ }
	360	};
	361
	362	int btbcm_initialize(struct hci_dev hdev, char fw_name, size_t len,
	363	bool reinit)
	364	{
	365	u16 subver, rev, pid, vid;
	366	const char *hw_name = "BCM";
	367	struct sk_buff *skb;
	368	struct hci_rp_read_local_version *ver;
	369	const struct bcm_subver_table *bcm_subver_table;
	370	int i, err;
	371
	372	/* Reset */
	373	err = btbcm_reset(hdev);
	374	if (err)
	375	return err;
	376
	377	/* Read Local Version Info */
	378	skb = btbcm_read_local_version(hdev);
	379	if (IS_ERR(skb))
	380	return PTR_ERR(skb);
	381
	382	ver = (struct hci_rp_read_local_version *)skb->data;
	383	rev = le16_to_cpu(ver->hci_rev);
	384	subver = le16_to_cpu(ver->lmp_subver);
	385	kfree_skb(skb);
	386
	387	/* Read controller information */
	388	if (!reinit) {
	389	err = btbcm_read_info(hdev);
	390	if (err)
	391	return err;
	392	}
	393
	394	/* Upper nibble of rev should be between 0 and 3? */
	395	if (((rev & 0xf000) >> 12) > 3)
	396	return 0;
	397
	398	bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
	399	bcm_uart_subver_table;
	400
	401	for (i = 0; bcm_subver_table[i].name; i++) {
	402	if (subver == bcm_subver_table[i].subver) {
	403	hw_name = bcm_subver_table[i].name;
	404	break;
	405	}
	406	}
	407
	408	if (hdev->bus == HCI_USB) {
	409	/* Read USB Product Info */
	410	skb = btbcm_read_usb_product(hdev);
	411	if (IS_ERR(skb))
	412	return PTR_ERR(skb);
	413
	414	vid = get_unaligned_le16(skb->data + 1);
	415	pid = get_unaligned_le16(skb->data + 3);
	416	kfree_skb(skb);
	417
	418	snprintf(fw_name, len, "brcm/%s-%4.4x-%4.4x.hcd",
	419	hw_name, vid, pid);
	420	} else {
	421	snprintf(fw_name, len, "brcm/%s.hcd", hw_name);
	422	}
	423
	424	bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
	425	hw_name, (subver & 0xe000) >> 13,
	426	(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
	427
	428	return 0;
	429	}
	430	EXPORT_SYMBOL_GPL(btbcm_initialize);
	431
	432	int btbcm_finalize(struct hci_dev *hdev)
	433	{
	434	char fw_name[64];
	435	int err;
	436
	437	/* Re-initialize */
	438	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
	439	if (err)
	440	return err;
	441
	442	btbcm_check_bdaddr(hdev);
	443
	444	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
	445
	446	return 0;
	447	}
	448	EXPORT_SYMBOL_GPL(btbcm_finalize);
	449
	450	int btbcm_setup_patchram(struct hci_dev *hdev)
	451	{
	452	char fw_name[64];
	453	const struct firmware *fw;
	454	struct sk_buff *skb;
	455	int err;
	456
	457	/* Initialize */
	458	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), false);
	459	if (err)
	460	return err;
	461
	462	err = request_firmware(&fw, fw_name, &hdev->dev);
	463	if (err < 0) {
	464	bt_dev_info(hdev, "BCM: Patch %s not found", fw_name);
	465	goto done;
	466	}
	467
	468	btbcm_patchram(hdev, fw);
	469
	470	release_firmware(fw);
	471
	472	/* Re-initialize */
	473	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
	474	if (err)
	475	return err;
	476
	477	/* Read Local Name */
	478	skb = btbcm_read_local_name(hdev);
	479	if (IS_ERR(skb))
	480	return PTR_ERR(skb);
	481
	482	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
	483	kfree_skb(skb);
	484
	485	done:
	486	btbcm_check_bdaddr(hdev);
	487
	488	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
	489
	490	return 0;
	491	}
	492	EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
	493
	494	int btbcm_setup_apple(struct hci_dev *hdev)
	495	{
	496	struct sk_buff *skb;
	497	int err;
	498
	499	/* Reset */
	500	err = btbcm_reset(hdev);
	501	if (err)
	502	return err;
	503
	504	/* Read Verbose Config Version Info */
	505	skb = btbcm_read_verbose_config(hdev);
	506	if (!IS_ERR(skb)) {
	507	bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
	508	skb->data[1], get_unaligned_le16(skb->data + 5));
	509	kfree_skb(skb);
	510	}
	511
	512	/* Read USB Product Info */
	513	skb = btbcm_read_usb_product(hdev);
	514	if (!IS_ERR(skb)) {
	515	bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
	516	get_unaligned_le16(skb->data + 1),
	517	get_unaligned_le16(skb->data + 3));
	518	kfree_skb(skb);
	519	}
	520
	521	/* Read Controller Features */
	522	skb = btbcm_read_controller_features(hdev);
	523	if (!IS_ERR(skb)) {
	524	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
	525	kfree_skb(skb);
	526	}
	527
	528	/* Read Local Name */
	529	skb = btbcm_read_local_name(hdev);
	530	if (!IS_ERR(skb)) {
	531	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
	532	kfree_skb(skb);
	533	}
	534
	535	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
	536
	537	return 0;
	538	}
	539	EXPORT_SYMBOL_GPL(btbcm_setup_apple);
	540
	541	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	542	MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
	543	MODULE_VERSION(VERSION);
	544	MODULE_LICENSE("GPL");